January 26, 2021 Subject:
Appropriate for its time.
This is a great source by which to compare against any other sources to find, granted there isn't much for Waltham. Reference wise, it quotes a lot and references lots too, but those sources are lost mostly, so we're left with the choice of using this as a first reference or trying to find original references. Personally I think this reference is useful, even if not definitive.